Character maps usually present the main characters and their relationships in a literary work. This learning tool highlights the relationships existing between the members of two different families through different colours and their nuances. It is designed to be read from top to bottom, but it still works if you start from any bubble.
Many adaptations of The Tempest may be found online. LnT chose an animated movie. You can find it at archive.org/details/ShakespeareTheTempestAnimation/.